Source code
Revision control
Copy as Markdown
Other Tools
Test Info: Warnings
- This test gets skipped with pattern: os == 'android'
- Manifest: js/xpconnect/tests/chrome/chrome.toml
<?xml version="1.0"?>
type="text/css"?>
<window title="Mozilla Bug ????" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<!-- test results are displayed in the html:body -->
</body>
<!-- test code goes here -->
<script type="application/javascript"><![CDATA[
/* eslint-disable no-eval */
add_task(async () => {
var sandbox = new Cu.Sandbox("about:blank");
await SpecialPowers.pushPrefEnv({
"set": [["security.allow_eval_with_system_principal",
true]]
});
function getCOW(x) {
if (typeof x != 'object' && typeof x != 'function')
return x;
x = Cu.waiveXrays(x);
var rval = {};
if (typeof x == "function")
rval = eval(`(${x.toString()})`);
for (var i in x) {
if (x.__lookupGetter__(i))
rval.__defineGetter__(i, eval(`(${x.__lookupGetter__(i).toString()})`))
else
rval[i] = getCOW(x[i]);
}
return rval;
}
// Give the sandbox a way to create ChromeObjectWrapped objects.
sandbox.getCOW = getCOW;
// Define test API functions in the sandbox.
const TEST_API = ['is', 'ok', 'info'];
TEST_API.forEach(function (name) { sandbox[name] = window[name]; });
function COWTests() {
var empty = {};
var cow = getCOW(empty);
// Because private fields may not be enabled, we construct A via the below eval of an IFFE,
// and return early if it syntax errors.
var A;
try {
A = eval(`(function(){
class Base {
constructor(o) {
return o;
}
};
class A extends Base {
#x = 12;
static gx(o) {
return o.#x;
}
static sx(o, v) {
o.#x = v;
}
};
return A;
})();`);
} catch (e) {
is(e instanceof SyntaxError, true, "Syntax error: Private fields not enabled");
is(/private fields are not currently supported/.test(e.message), true, "correct message");
return;
}
new A(empty);
is(A.gx(empty), 12, "Correct value read");
A.sx(empty, 'wrapped');
function assertThrewInstance(f, error) {
var threw = true;
try {
f();
threw = false;
} catch (e) {
is(e instanceof error, true, "Correct Error");
}
is(threw, true, "Threw!");
}
// Note: These throw warnings:
//
// WARNING: Silently denied access to property ##x: Access to privileged JS object not permitted (@chrome://mochitests/content/chrome/js/xpconnect/tests/chrome/test_private_field_cows.xhtml:108:27): file /js/xpconnect/wrappers/XrayWrapper.cpp, line 226
//
// It's not clear to me if we ougth to wire this up to -not-? I suspect this is a result of invoking
// the has
assertThrewInstance(() => A.gx(cow), TypeError);
assertThrewInstance(() => A.sx(cow, 'unwrapped'), TypeError);
assertThrewInstance(() => new A(cow), Error);
assertThrewInstance(() => A.gx(cow), TypeError);
}
// Stringify the COW test suite and directly evaluate it in the sandbox.
Cu.evalInSandbox('(' + COWTests.toString() + ')()', sandbox);
// Test that COWed objects passing from content to chrome get unwrapped.
function returnCOW() {
return getCOW({
bar: 6
});
}
// eslint-disable-next-line no-unused-vars
var unwrapped = Cu.evalInSandbox(
'(' + returnCOW.toString() + ')()',
sandbox
);
ok(true, "passed");
});
]]></script>
</window>